<template>
  <div class="arrow-left"></div>
</template>
<style lang="stylus">
.arrow-left {
  overflow: hidden;
  height: 64px;
  width: 32px;

  &:after {
    content: '';
    display: block;
    border: 6px solid #000;
    height: 54px;
    width: 54px;
    transform: translateX(25%) rotate(45deg);
  }
}
</style>